SI5350B-B Datasheet, PDF (7/32 Pages) Silicon Laboratories – FACTORY-PROGRAMMABLE ANY-FREQUENCY CMOS CLOCK GENERATOR

Si5350B-B
Table 7. 25 MHz Crystal Requirements^1,2
Parameter
Crystal Frequency
Load Capacitance
Symbol
Min
Typ
Max
Unit
f_XTAL
C_L
—
25
—
MHz
6
—
12
pF
Equivalent Series Resistance
r_ESR
—
—
150

Crystal Max Drive Level
d_L
100
—
—
µW
Notes:
1. Crystals which require load capacitances of 6, 8, or 10 pF should use the device’s internal load capacitance for
optimum performance. See register 183 bits 7:6. A crystal with a 12 pF load capacitance requirement should use a
combination of the internal 10 pF load capacitance in addition to external 2 pF load capacitance (e.g., by using 4 pF
capacitors on XA and XB).
2. Refer to “AN551: Crystal Selection Guide” for more details.
Table 8. 27 MHz Crystal Requirements^1,2
Parameter
Symbol
Min
Typ
Max
Unit
Crystal Frequency
f_XTAL
—
27
—
MHz
Load Capacitance
C_L
6
—
12
pF
Equivalent Series Resistance
r_ESR
—
—
150

Crystal Max Drive Level Spec
d_L
100
—
—
µW
Notes:
1. Crystals which require load capacitances of 6, 8, or 10 pF should use the device’s internal load capacitance for
optimum performance. See register 183 bits 7:6. A crystal with a 12 pF load capacitance requirement should use a
combination of the internal 10 pF load capacitance in addition to external 2 pF load capacitance (e.g., by using 4 pF
capacitors on XA and XB).
2. Refer to “AN551: Crystal Selection Guide” for more details.
Rev. 1.0
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